Adjustable vent clamp



FIG. 1 is a rear perspective view of an adjustable vent clamp showing the slide plate expanded.

FIG. 2 is a left side elevational view of the invention.

FIG. 3 is a right side elevation view of the invention.

FIG. 4 is a top plan view of the invention.

FIG. 5 is a bottom plan view of the invention.

FIG. 6 is a rear elevational view of the invention.

FIG. 7 is a front elevational view of the invention.

FIG. 8 is a rear perspective view of an adjustable vent clamp showing the slide plate retracted; and,

FIG. 9 is a front perspective view of an adjustable vent clamp showing the slide plate retracted. 

CLAIM The ornamental design for an adjustable vent clamp, as shown and described. 